docs: def get_transactions(self):
          """Get all your deposits and withdrawals.
  
          Returns:
              dict: lists of your NMR and USD transactions
  
              The returned dict has the following structure:
  
                  * nmrDeposits (`list`) contains items with fields:
                   * from (`str`)
                   * posted (`bool`)
                   * status (`str`)
                   * to (`str`)
                   * txHash (`str`)
                   * value (`decimal.Decimal`)
                  * nmrWithdrawals"` (`list`) contains items with fields:
                   * from"` (`str`)
                   * posted"` (`bool`)
                   * status"` (`str`)
                   * to"` (`str`)
                   * txHash"` (`str`)
                   * value"` (`decimal.Decimal`)
                  * usdWithdrawals"` (`list`) contains items with fields:
                   * confirmTime"` (`datetime` or `None`)
                   * ethAmount"` (`str`)
                   * from"` (`str`)
                   * posted"` (`bool`)
                   * sendTime"` (`datetime`)
                   * status"` (`str`)
                   * to (`str`)
                   * txHash (`str`)
                   * usdAmount (`decimal.Decimal`)
  
          Example:
              >>> api = NumerAPI(secret_key="..", public_id="..")
              >>> api.get_transactions()
              {'nmrDeposits': [
                  {'from': '0x54479..9ec897a',
                   'posted': True,
                   'status': 'confirmed',
                   'to': '0x0000000000000000000001',
                   'txHash': '0x52..e2056ab',
                   'value': Decimal('9.0')},
                   .. ],
               'nmrWithdrawals': [
                  {'from': '0x0000000000000000..002',
                   'posted': True,
                   'status': 'confirmed',
                   'to': '0x00000000000..001',
                   'txHash': '0x1278..266c',
                   'value': Decimal('2.0')},
                   .. ],
               'usdWithdrawals': [
                  {'confirmTime': datetime.datetime(2018, 2, 11, 17, 54, 2, 785430, tzinfo=tzutc()),
                   'ethAmount': '0.295780674909307710',
                   'from': '0x11.....',
                   'posted': True,
                   'sendTime': datetime.datetime(2018, 2, 11, 17, 53, 25, 235035, tzinfo=tzutc()),
                   'status': 'confirmed',
                   'to': '0x81.....',
                   'txHash': '0x3c....',
                   'usdAmount': Decimal('10.07')},
                   ..]}
          """
          query = """
            query {
              user {
                nmrDeposits {
                  from
                  posted
                  status
                  to
                  txHash
                  value
                }
                nmrWithdrawals {
                  from
                  posted
                  status
                  to
                  txHash
                  value
                }
                usdWithdrawals {
                  ethAmount
                  confirmTime
                  from
                  posted
                  sendTime
                  status
                  to
                  txHash
                  usdAmount
                }
              }
            }
          """
          txs = self.raw_query(query, authorization=True)['data']['user']
          # convert strings to python objects
          for t in txs['usdWithdrawals']:
              utils.replace(t, "confirmTime", utils.parse_datetime_string)
              utils.replace(t, "sendTime", utils.parse_datetime_string)
              utils.replace(t, "usdAmount", utils.parse_float_string)
          for t in txs["nmrWithdrawals"]:
              utils.replace(t, "value", utils.parse_float_string)
          for t in txs["nmrDeposits"]:
              utils.replace(t, "value", utils.parse_float_string)
          return txs